server.js

const path = require("path");
const fs = require("fs");
const untildify = require("untildify");
const express = require("express");
const https = require("https");
const argv = require("yargs")
  .usage(
    "Usage: $0 --appno [appno] --key [key] --cert [cert] --port [port] --sw-url [Service Worker URL] --sw-path [Service Worker Path]"
  )
  .demandOption(["appno", "key", "cert"]).argv;
const app = express();

app.set("view engine", "ejs");
app.engine("html", require("ejs").renderFile);
app.engine("js", require("ejs").renderFile);

const port = argv["port"] || process.env.PORT || 3000;

const options = {
  key: fs.readFileSync(path.resolve(untildify(argv["key"]))),
  cert: fs.readFileSync(path.resolve(untildify(argv["cert"]))),
};
const server = https.createServer(options, app);

const params = {
  appno: argv["appno"],
  sw: argv["sw-url"] || "https://aldebaran.push7.com/ex-push7-worker.js",
};

app.get("/", function (req, res) {
  res.render(path.resolve(__dirname, "./src/index.html"), {
    ...params,
    host: req.get("host"),
  });
});

app.get("/push7-worker.js", function (req, res) {
  res.type("text/javascript");
  if (!!argv["sw-path"]) {
    // sw-path が設定されている場合はそちらを優先する
    res.sendFile(untildify(argv["sw-path"]));
    return;
  }
  res.render(
    path.resolve(__dirname, "./src/push7-worker.js"),
    { ...params, host: req.get("host") },
    (error, html) => {
      res.send(Buffer.from(html));
    }
  );
});

app.use("/", express.static(path.resolve(__dirname, "./src")));
server.listen(port, () => console.log(`app listening on port ${port}`));